/* NeuroExpert design system 2026-06. Scope: imported lesson content only. */
.nec-course-lesson{--nec-primary:#1577af;--nec-primary-dark:#11618e;--nec-primary-bg:#eaf4fa;--nec-heading:#0f172a;--nec-body:#475569;--nec-muted:#64748b;--nec-border:#e2e8f0;--nec-bg:#f8fafc;--nec-font-body:'Para',system-ui,-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;--nec-font-heading:'Title',Georgia,serif;box-sizing:border-box;max-width:1120px;margin:0 auto;padding:clamp(18px,3vw,40px);background:var(--nec-bg);color:var(--nec-body);font-family:var(--nec-font-body);font-size:16px;line-height:1.8;border-radius:20px}
.nec-course-lesson *{box-sizing:border-box}.nec-course-lesson h2,.nec-course-lesson h3{font-family:var(--nec-font-heading);color:var(--nec-heading);line-height:1.3;font-weight:700;letter-spacing:0;margin:0 0 16px}.nec-course-lesson h2{font-size:clamp(1.45rem,2.2vw,1.95rem);margin-top:30px}.nec-course-lesson h3{font-size:1.2rem}.nec-course-lesson p{margin:0 0 20px}.nec-course-lesson a{color:var(--nec-primary-dark);text-underline-offset:4px;overflow-wrap:anywhere}.nec-course-lesson a:hover{color:var(--nec-primary)}.nec-course-lesson .nec-kicker{font-family:var(--nec-font-body);font-size:12px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--nec-primary-dark);margin-bottom:15px;line-height:1.6}.nec-course-lesson .nec-kicker span{margin:0 8px;color:#64748b}.nec-course-lesson .nec-lead{font-size:clamp(1.06rem,1.6vw,1.25rem);line-height:1.75;color:var(--nec-body);max-width:820px}.nec-course-lesson .nec-meta{display:flex;gap:12px;flex-wrap:wrap;font-size:13px;color:var(--nec-muted);margin:20px 0}.nec-course-lesson .nec-meta span{padding:4px 12px;background:white;border:1px solid var(--nec-border);border-radius:999px}.nec-course-lesson .nec-photo{margin:25px 0}.nec-course-lesson .nec-photo>div{border-radius:18px;overflow:hidden;background:#eaf4fa}.nec-course-lesson .nec-photo img{display:block;width:100%;max-height:430px;aspect-ratio:2.3;object-fit:cover;margin:0}.nec-course-lesson .nec-photo figcaption{display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;font-size:12px;color:var(--nec-muted);margin-top:9px}.nec-course-lesson .nec-goal{padding:18px 24px;border-left:4px solid var(--nec-primary);background:white;border-radius:0 14px 14px 0;margin:28px 0;box-shadow:0 1px 3px #00000008}.nec-course-lesson .nec-goal strong{font-size:12px;text-transform:uppercase;letter-spacing:.06em;color:var(--nec-primary-dark)}.nec-course-lesson .nec-goal p{font-size:17px;font-weight:500;color:var(--nec-heading);margin:8px 0 0}.nec-course-lesson .nec-content-grid{display:grid;grid-template-columns:minmax(0,1fr) 230px;gap:clamp(24px,3vw,42px)}.nec-course-lesson .nec-prose{min-width:0}.nec-course-lesson .nec-prose>section:first-child h2{margin-top:0}.nec-course-lesson .nec-note{padding:24px 20px;background:white;border:1px solid var(--nec-border);border-radius:16px;align-self:start;font-size:14px;box-shadow:0 2px 8px #00000006}.nec-course-lesson .nec-note p:last-child{margin-bottom:0}.nec-course-lesson .nec-exercise{padding:clamp(22px,3vw,32px);background:var(--nec-primary-bg);border-radius:20px;margin:32px 0;border:1px solid #1577af26}.nec-course-lesson .nec-exercise h2{margin-top:0}.nec-course-lesson ol{padding-left:25px;margin:16px 0}.nec-course-lesson li{padding-left:6px;margin:14px 0}.nec-course-lesson li::marker{color:var(--nec-primary-dark);font-weight:700}.nec-course-lesson .nec-success{border-top:1px solid #1577af26;margin-top:25px;padding-top:20px}.nec-course-lesson .nec-success strong{color:var(--nec-heading);font-weight:700}.nec-course-lesson .nec-success p{margin:8px 0 0}.nec-course-lesson .nec-resource-card{padding:24px;margin:18px 0;background:white;border:1px solid var(--nec-border);border-radius:16px;box-shadow:0 1px 3px #00000006}.nec-course-lesson .nec-resource-card p:last-child{margin-bottom:0}.nec-course-lesson .nec-button{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:48px;padding:12px 20px;background:var(--nec-primary);border:0;border-radius:10px;color:white;font:700 14px/1.5 var(--nec-font-body);cursor:pointer;overflow:visible;text-decoration:none;transition:background .18s,box-shadow .18s;box-shadow:0 4px 16px #1577af2e;transform:none}.nec-course-lesson .nec-button:hover{background:var(--nec-primary-dark);color:white;transform:none}.nec-course-lesson .nec-button svg{width:19px;height:19px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}.nec-course-lesson button:focus-visible,.nec-course-lesson a:focus-visible{outline:3px solid #1577af;outline-offset:4px}.nec-course-lesson .nec-tablist{display:flex;gap:24px;border-bottom:1px solid var(--nec-border);margin:24px 0}.nec-course-lesson .nec-tab{background:transparent;color:var(--nec-muted);border:0;border-bottom:3px solid transparent;border-radius:0;padding:13px 4px;font:600 15px/1.5 var(--nec-font-body);cursor:pointer;box-shadow:none;transform:none}.nec-course-lesson .nec-tab[aria-selected=true]{color:var(--nec-primary-dark);border-bottom-color:var(--nec-primary)}.nec-course-lesson [data-nec-pane][hidden]{display:none}.nec-course-lesson .nec-video-slot iframe{width:100%;aspect-ratio:16/9;height:auto;border:0;border-radius:12px;background:#0f172a;display:block;margin:18px 0}.nec-course-lesson .nec-video-slot .nec-button{margin-bottom:16px}.nec-course-lesson.nec-template-project .nec-exercise{background:white;border:2px solid #1577af3b}.nec-course-lesson.nec-template-case-study .nec-prose>section{padding-bottom:12px;border-bottom:1px solid var(--nec-border)}.nec-course-lesson.nec-template-workshop .nec-exercise h2{color:var(--nec-primary-dark)}
@media(max-width:1100px){.nec-course-lesson .nec-content-grid{grid-template-columns:1fr}.nec-course-lesson .nec-note{position:static}.nec-course-lesson .nec-photo img{aspect-ratio:1.8}}
@media(max-width:760px){.nec-course-lesson{padding:20px 16px;border-radius:14px}.nec-course-lesson .nec-meta{gap:8px}.nec-course-lesson .nec-photo img{aspect-ratio:1.35}.nec-course-lesson .nec-resource-card{padding:20px}.nec-course-lesson .nec-button{width:100%}}
@media(prefers-reduced-motion:reduce){.nec-course-lesson *{transition:none!important}}